SuperCosmos 1.1
SuperCosmos 1.1
SuperCosmos 1.1 by Clatter Labs powers the Agent API, the Model API, Line CLI and Cosmos Agent. Three tiers (efforts in Line CLI) trade speed for depth.
Agent API · Line CLI · Cosmos Agent
SuperCosmos 1.1
The model family behind every Clatter Labs product, tuned for coding-agent work.
- FlashFast
- MaxStrong
- HeavyDeliberate
SuperCosmos by Clatter Labs is the model family behind every Clatter Labs product. The current version is SuperCosmos 1.1 (Nov 2, 2026). It is a 550B-parameter mixture-of-experts model (55B active per token) with a 1M-token context window (1,048,576 tokens), and it comes in three tiers that share those weights and that window, each tuned with its own instructions for coding-agent work: look before changing, use tools carefully, plan bigger jobs, verify before reporting, answer briefly.
per 1M tokens
Quick edits, answers and everyday agent steps. No extended thinking.
per 1M tokens
Planning, debugging and multi-file changes. Thinks before acting.
per 1M tokens
Hard bugs, long builds, deep reasoning. Thinks longest.
Compare tiers
| Flash | Max | Heavy | |
|---|---|---|---|
| Model id | supercosmos-flash | supercosmos-max | supercosmos-heavy |
| Speed | Fastest | Balanced | Slowest |
| Extended thinking | Off | On | On, longest |
| Parameters | 550B (55B active) | 550B (55B active) | 550B (55B active) |
| Context window | 1M tokens | 1M tokens | 1M tokens |
| Input / 1M tokens | $1.60 | $1.80 | $2.00 |
| Output / 1M tokens | $3.40 | $3.80 | $4.40 |
| Long-context input (above 262K tokens) | 1.5× | 1.5× | 1.5× |
Output prices include reasoning tokens.
Where you choose a tier
| Product | How |
|---|---|
| Agent API | tier on POST /v1/runs: auto, flash, max, heavy |
| Model API | The model id: supercosmos-flash, supercosmos-max or supercosmos-heavy (Model API) |
| Line CLI | /model → SuperCosmos, then /effort flash, max or heavy (or auto, which routes between Flash and Max per step) |
With auto, each call is routed and billed at the tier it actually ran on. Agent API runs on auto bill as Flash.
In Line CLI the tiers are called efforts of the SuperCosmos model (Flash, Max, Heavy); prices are the same.
Previous versions
| Model | Status | |
|---|---|---|
| SuperCosmos 1.0 | Previous version | Its model ids now run SuperCosmos 1.1, at the same prices. |
| Line Code | Retired Nov 1, 2026 | Its ids answer 410 model_retired; Line CLI moves to SuperCosmos automatically. See Line Code retirement. |
SuperCosmos reads text. It doesn't take image input.